Cryptologic Technician ratings (CTA, CTI, CTM, CTN, CTO, CTR, CTT) work with some of the most sophisticated and complex systems the Navy has to offer, in the performance of their mission functions. All of the CT career fields offer impressive training pipelines, excellent promotion opportunities, and diverse job assignments.

CTA - Cryptologic Technician (Administrative)

Focal point for carrying out administrative, clerical, personnel and physical security duties for the Naval Security Group, and at intelligence activities (ashore and afloat). They perform manpower analysis; maintain classified inventories, information management, and publications; operate AIS equipment in a technologically advanced workcenter environment; prepare and route correspondence and reports; serve as couriers for the Defense Courier Service (DCS); and perform in a full time support capacity for cryptologic reserve programs at Naval Security Group Reserve Centers worldwide.

CTI - Cryptologic Technician (Interpretive)

Provide cryptographic, linguistic and analytical support to high level government officials and military commands in support of national and theater objectives. They serve in a wide variety of duty stations, as well as on aircraft, ships, and submarines, and normally work with sophisticated computer data bases and electronic equipment.

CTM – Cryptologic Technician (Maintenance)

Install, test, troubleshoot, repair and maintain electronic systems used in data communications and signal collection, both ashore and afloat. They inspect and inventory assigned equipment, order parts, and prepare reports. They employ software computer based system diagnostics as well as traditional electronic test equipment, to isolate failures to the lowest replaceable unit (LRU).  They repair and replace software locally, and from remote locations, using Local and Wide Area Networks and satellite links. They are responsible for proper operation of commercial off-the-shelf (COTS) systems, as well as standard government equipment. The training they receive begins with basic electronics and over the course of a career will include sophisticated engineering concepts and resource management techniques, ship operations, safety and shipboard damage control.

CTN - Cryptologic Technician (Networks)

Possesses a combination of technical knowledge and analysis skills to fuse together information from various sources to provide the operational commanders with the situational awareness they will require to plan and execute information operation Courses of actions/counter-actions.  CTN's perform network target development; software tool modification; network access/attack operations; indications & warning; attack sensing & warning; vulnerability assessments; and network attack diagnostics. The CTN rating was established in Feb 2004.

CTO - Cryptologic Technician (Communication)

Operates telecommunications systems across the global communications spectrum.  Their advanced AIS networking and information management skills support the movement of data to operating forces, ashore and afloat. Administrative duties include maintaining electronic filing systems and updating communications publications using automated methods. Technical duties involve the control and operation of communications systems and networks, including satellite systems, network servers, modems, routers, communications security and cryptographic devices. Quality control is performed using state-of-the-art test equipment such as oscilloscopes and LAN analyzers. The CTO rating was disestablished on 01 Oct 2006, and merged into the IT - Information Systems Technician rating.

CTR - Cryptologic Technician (Collection)

Performs collection and analysis of state of the art communications signals, using sophisticated high powered computers, specialized computer-assisted communications equipment, video display terminals and electronic/magnetic recorders. Trained in the latest innovations in communications and signals analysis. Trained in satellite communications, high frequency direction finding, direct support to ships and submarines, shipboard and aircraft cryptologic systems, special projects, and manual morse collection.

CTT - Cryptologic Technician (Technical)

Operates Electronic Intelligence (ELINT) receiving, direction finding, recording, and related computer equipment.  Operates sophisticated state-of-the-art radar electronic equipment, magnetic and digital recording devices, analysis terminals and associated peripherals.  Performs duties associated with computer equipment, video display terminals, computer interface consoles, and non-morse communications systems. Provides ELINT analysis and technical guidance to the fleet (air, surface, and subsurface) in support of national security requirements.

Source:
Federation of American Scientists (FAS).  Source: FAS WebSite.